Try harder to check lang as path component (".", "..", / inside).

Try harder to not overwrite failure errno.
style(9) whitespace reformatting for code readability.
This commit is contained in:
Andrey A. Chernov 2002-08-04 14:03:59 +00:00
parent 4bd5585fbd
commit 97c54f7797
Notes: svn2git 2020-12-20 02:59:44 +00:00
svn path=/head/; revision=101316

View File

@ -53,6 +53,7 @@ __FBSDID("$FreeBSD$");
#include "un-namespace.h"
#include "msgcat.h"
#include "../locale/setlocale.h" /* for ENCODING_LEN */
#define _DEFAULT_NLS_PATH "/usr/share/nls/%L/%N.cat:/usr/share/nls/%N/%L:/usr/local/share/nls/%L/%N.cat:/usr/local/share/nls/%N/%L"
@ -60,125 +61,133 @@ __FBSDID("$FreeBSD$");
#define FALSE 0
#define NLERR ((nl_catd) -1)
#define NLRETERR(errc) errno = errc; return(NLERR);
#define NLRETERR(errc) { errno = errc; return (NLERR); }
static nl_catd loadCat();
static int loadSet();
static void __nls_free_resources();
static nl_catd loadCat();
static int loadSet();
static void __nls_free_resources();
nl_catd
catopen( name, type)
__const char *name;
int type;
catopen(name, type)
__const char *name;
int type;
{
int spcleft;
char path[PATH_MAX];
char *nlspath, *lang, *base, *cptr, *pathP, *tmpptr;
char *cptr1, *plang, *pter, *pcode;
struct stat sbuf;
int spcleft, saverr;
char path[PATH_MAX];
char *nlspath, *lang, *base, *cptr, *pathP, *tmpptr;
char *cptr1, *plang, *pter, *pcode;
struct stat sbuf;
if (name == NULL || *name == '\0') {
NLRETERR(ENOENT);
}
if (name == NULL || *name == '\0')
NLRETERR(EINVAL);
/* is it absolute path ? if yes, load immidiately */
if (strchr(name, '/'))
return loadCat(name);
/* is it absolute path ? if yes, load immediately */
if (strchr(name, '/') != NULL)
return (loadCat(name));
if (type == NL_CAT_LOCALE)
lang = setlocale(LC_MESSAGES, NULL);
else
lang = getenv("LANG");
if (lang == NULL || *lang == '\0' || strchr(lang, '/') != NULL)
lang = "C";
if (type == NL_CAT_LOCALE)
lang = setlocale(LC_MESSAGES, NULL);
else
lang = getenv("LANG");
if ((plang = cptr1 = strdup(lang)) == NULL)
return (NLERR);
if ((cptr = strchr(cptr1, '@')) != NULL)
*cptr = '\0';
pter = pcode = "";
if ((cptr = strchr(cptr1, '_')) != NULL) {
*cptr++ = '\0';
pter = cptr1 = cptr;
}
if ((cptr = strchr(cptr1, '.')) != NULL) {
*cptr++ = '\0';
pcode = cptr;
}
if (lang == NULL || *lang == '\0' || strlen(lang) > ENCODING_LEN ||
(lang[0] == '.' &&
(lang[1] == '\0' || (lang[1] == '.' && lang[2] == '\0'))) ||
strchr(lang, '/') != NULL)
lang = "C";
if ((nlspath = getenv("NLSPATH")) == NULL
if ((plang = cptr1 = strdup(lang)) == NULL)
return (NLERR);
if ((cptr = strchr(cptr1, '@')) != NULL)
*cptr = '\0';
pter = pcode = "";
if ((cptr = strchr(cptr1, '_')) != NULL) {
*cptr++ = '\0';
pter = cptr1 = cptr;
}
if ((cptr = strchr(cptr1, '.')) != NULL) {
*cptr++ = '\0';
pcode = cptr;
}
if ((nlspath = getenv("NLSPATH")) == NULL
#ifndef __NETBSD_SYSCALLS
|| issetugid()
|| issetugid()
#endif
)
nlspath = _DEFAULT_NLS_PATH;
)
nlspath = _DEFAULT_NLS_PATH;
if ((base = cptr = strdup(nlspath)) == NULL) {
free(plang);
return (NLERR);
}
if ((base = cptr = strdup(nlspath)) == NULL) {
saverr = errno;
free(plang);
errno = saverr;
return (NLERR);
}
while ((nlspath = strsep(&cptr, ":")) != NULL) {
pathP = path;
if (*nlspath) {
for ( ; *nlspath; ++nlspath) {
if (*nlspath == '%') {
switch (*(nlspath + 1)) {
case 'l':
tmpptr = plang;
break;
case 't':
tmpptr = pter;
break;
case 'c':
tmpptr = pcode;
break;
case 'L':
tmpptr = lang;
break;
case 'N':
tmpptr = (char*)name;
break;
case '%':
++nlspath;
/* fallthrough */
default:
if (pathP - path >= sizeof(path) - 1)
goto too_long;
*(pathP++) = *nlspath;
continue;
while ((nlspath = strsep(&cptr, ":")) != NULL) {
pathP = path;
if (*nlspath) {
for (; *nlspath; ++nlspath) {
if (*nlspath == '%') {
switch (*(nlspath + 1)) {
case 'l':
tmpptr = plang;
break;
case 't':
tmpptr = pter;
break;
case 'c':
tmpptr = pcode;
break;
case 'L':
tmpptr = lang;
break;
case 'N':
tmpptr = (char *)name;
break;
case '%':
++nlspath;
/* fallthrough */
default:
if (pathP - path >=
sizeof(path) - 1)
goto too_long;
*(pathP++) = *nlspath;
continue;
}
++nlspath;
put_tmpptr:
spcleft = sizeof(path) -
(pathP - path) - 1;
if (strlcpy(pathP, tmpptr, spcleft) >=
spcleft) {
too_long:
free(plang);
free(base);
NLRETERR(ENAMETOOLONG);
}
pathP += strlen(tmpptr);
} else {
if (pathP - path >= sizeof(path) - 1)
goto too_long;
*(pathP++) = *nlspath;
}
}
++nlspath;
put_tmpptr:
spcleft = sizeof(path) - (pathP - path) - 1;
if (strlcpy(pathP, tmpptr, spcleft) >= spcleft) {
too_long:
*pathP = '\0';
if (stat(path, &sbuf) == 0) {
free(plang);
free(base);
NLRETERR(ENAMETOOLONG);
return (loadCat(path));
}
pathP += strlen(tmpptr);
} else {
if (pathP - path >= sizeof(path) - 1)
goto too_long;
*(pathP++) = *nlspath;
}
} else {
tmpptr = (char *)name;
--nlspath;
goto put_tmpptr;
}
*pathP = '\0';
if (stat(path, &sbuf) == 0) {
free(plang);
free(base);
return loadCat(path);
}
} else {
tmpptr = (char*)name;
--nlspath;
goto put_tmpptr;
}
}
free(plang);
free(base);
NLRETERR(ENOENT);
free(plang);
free(base);
NLRETERR(ENOENT);
}
/*
@ -202,97 +211,105 @@ catopen( name, type)
*
*/
#define LOOKUP(PARENT, CHILD, ID, NUM, SET) { \
lo = 0; \
if (ID - 1 < PARENT->NUM) { \
cur = ID - 1; hi = ID; \
} else { \
hi = PARENT->NUM; cur = (hi - lo) / 2; \
} \
while (TRUE) { \
CHILD = PARENT->SET + cur; \
if (CHILD->ID == ID) break; \
if (CHILD->ID < ID) { \
lo = cur+1; \
if (hi > cur+(ID-CHILD->ID)+1) \
hi = cur+(ID-CHILD->ID)+1; \
dir = 1; \
} else { \
hi = cur; dir = -1; \
} \
if (lo >= hi) return(NULL); \
if (hi - lo == 1) cur += dir; \
else cur += ((hi - lo) / 2) * dir; \
} \
}
static MCSetT*
MCGetSet( cat, setId)
MCCatT *cat;
int setId;
{
MCSetT *set;
long lo, hi, cur, dir;
if (cat == NULL || setId <= 0) return(NULL);
LOOKUP(cat, set, setId, numSets, sets);
if (set->invalid && loadSet(cat, set) <= 0)
return(NULL);
return(set);
#define LOOKUP(PARENT, CHILD, ID, NUM, SET) { \
lo = 0; \
if (ID - 1 < PARENT->NUM) { \
cur = ID - 1; \
hi = ID; \
} else { \
hi = PARENT->NUM; \
cur = (hi - lo) / 2; \
} \
while (TRUE) { \
CHILD = PARENT->SET + cur; \
if (CHILD->ID == ID) \
break; \
if (CHILD->ID < ID) { \
lo = cur + 1; \
if (hi > cur + (ID - CHILD->ID) + 1) \
hi = cur + (ID - CHILD->ID) + 1; \
dir = 1; \
} else { \
hi = cur; \
dir = -1; \
} \
if (lo >= hi) \
return (NULL); \
if (hi - lo == 1) \
cur += dir; \
else \
cur += ((hi - lo) / 2) * dir; \
} \
}
static MCMsgT*
MCGetMsg( set, msgId)
MCSetT *set;
int msgId;
static MCSetT *
MCGetSet(cat, setId)
MCCatT *cat;
int setId;
{
MCMsgT *msg;
long lo, hi, cur, dir;
MCSetT *set;
long lo, hi, cur, dir;
if (set == NULL || set->invalid || msgId <= 0) return(NULL);
LOOKUP(set, msg, msgId, numMsgs, u.msgs);
return(msg);
if (cat == NULL || setId <= 0)
return (NULL);
LOOKUP(cat, set, setId, numSets, sets);
if (set->invalid && loadSet(cat, set) <= 0)
return (NULL);
return (set);
}
char*
catgets( catd, setId, msgId, dflt)
nl_catd catd;
int setId;
int msgId;
__const char *dflt;
static MCMsgT *
MCGetMsg(set, msgId)
MCSetT *set;
int msgId;
{
MCMsgT *msg;
MCCatT *cat = (MCCatT *) catd;
__const char *cptr;
MCMsgT *msg;
long lo, hi, cur, dir;
if (catd == NULL || catd == NLERR)
return((char *)dflt);
msg = MCGetMsg(MCGetSet(cat, setId), msgId);
if (msg != NULL) cptr = msg->msg.str;
else cptr = dflt;
return((char *)cptr);
if (set == NULL || set->invalid || msgId <= 0)
return (NULL);
LOOKUP(set, msg, msgId, numMsgs, u.msgs);
return (msg);
}
char *
catgets(catd, setId, msgId, dflt)
nl_catd catd;
int setId;
int msgId;
__const char *dflt;
{
MCMsgT *msg;
MCCatT *cat = (MCCatT *)catd;
__const char *cptr;
if (catd == NULL || catd == NLERR)
return ((char *)dflt);
msg = MCGetMsg(MCGetSet(cat, setId), msgId);
if (msg != NULL)
cptr = msg->msg.str;
else
cptr = dflt;
return ((char *)cptr);
}
int
catclose( catd)
catclose(catd)
nl_catd catd;
{
MCCatT *cat = (MCCatT *) catd;
if (catd == NULL || catd == NLERR) {
errno = EBADF; return(-1);
}
MCCatT *cat = (MCCatT *)catd;
if (catd == NULL || catd == NLERR) {
errno = EBADF;
return (-1);
}
#if 0
if (cat->loadType != MCLoadAll)
if (cat->loadType != MCLoadAll)
#endif
(void) fclose(cat->fp);
__nls_free_resources(cat, cat->numSets);
free(cat);
return(0);
(void)fclose(cat->fp);
__nls_free_resources(cat, cat->numSets);
free(cat);
return (0);
}
/*
@ -300,159 +317,180 @@ catclose( catd)
*/
/* Note that only malloc failures are allowed to return an error */
static char* _errowner = "Message Catalog System";;
#define CORRUPT() { \
fprintf(stderr, "%s: corrupt file.", _errowner); \
free(cat); \
NLRETERR(EINVAL); \
}
static char *_errowner = "Message Catalog System";
#define NOSPACE() { \
fprintf(stderr, "%s: no more memory.", _errowner); \
free(cat); \
return(NLERR); \
}
#define CORRUPT() { \
(void)fprintf(stderr, "%s: corrupt file.", _errowner); \
free(cat); \
NLRETERR(EFTYPE); \
}
#define NOSPACE() { \
saverr = errno; \
(void)fprintf(stderr, "%s: no more memory.", _errowner); \
free(cat); \
errno = saverr; \
return (NLERR); \
}
static void
__nls_free_resources(cat, i)
MCCatT *cat;
int i;
MCCatT *cat;
int i;
{
MCSetT *set;
int j;
MCSetT *set;
int j;
for (j = 0; j < i; j++) {
set = cat->sets + j;
if (!set->invalid) {
free(set->data.str);
free(set->u.msgs);
for (j = 0; j < i; j++) {
set = cat->sets + j;
if (!set->invalid) {
free(set->data.str);
free(set->u.msgs);
}
}
}
free(cat->sets);
free(cat->sets);
}
static nl_catd
loadCat(catpath)
__const char *catpath;
__const char *catpath;
{
MCHeaderT header;
MCCatT *cat;
MCSetT *set;
long i;
off_t nextSet;
MCHeaderT header;
MCCatT *cat;
MCSetT *set;
long i;
off_t nextSet;
int saverr;
cat = (MCCatT *) malloc(sizeof(MCCatT));
if (cat == NULL) return(NLERR);
cat->loadType = MCLoadBySet;
if ((cat = (MCCatT *)malloc(sizeof(MCCatT))) == NULL)
return (NLERR);
cat->loadType = MCLoadBySet;
if ((cat->fp = fopen(catpath, "r")) == NULL) {
free(cat);
return(NLERR);
}
if ((cat->fp = fopen(catpath, "r")) == NULL) {
saverr = errno;
free(cat);
errno = saverr;
return (NLERR);
}
(void)_fcntl(fileno(cat->fp), F_SETFD, FD_CLOEXEC);
(void) _fcntl(fileno(cat->fp), F_SETFD, FD_CLOEXEC);
if (fread(&header, sizeof(header), 1, cat->fp) != 1)
CORRUPT();
if (strncmp(header.magic, MCMagic, MCMagicLen) != 0) CORRUPT();
if (header.majorVer != MCMajorVer) {
free(cat);
fprintf(stderr, "%s: %s is version %ld, we need %ld.\n", _errowner,
catpath, header.majorVer, MCMajorVer);
NLRETERR(EINVAL);
}
if (header.numSets <= 0) {
free(cat);
fprintf(stderr, "%s: %s has %ld sets!\n", _errowner, catpath,
header.numSets);
NLRETERR(EINVAL);
}
cat->numSets = header.numSets;
cat->sets = (MCSetT *) malloc(sizeof(MCSetT) * header.numSets);
if (cat->sets == NULL) NOSPACE();
nextSet = header.firstSet;
for (i = 0; i < cat->numSets; ++i) {
if (fseeko(cat->fp, nextSet, SEEK_SET) == -1) {
__nls_free_resources(cat, i);
if (fread(&header, sizeof(header), 1, cat->fp) != 1 ||
strncmp(header.magic, MCMagic, MCMagicLen) != 0)
CORRUPT();
if (header.majorVer != MCMajorVer) {
free(cat);
(void)fprintf(stderr, "%s: %s is version %ld, we need %ld.\n",
_errowner, catpath, header.majorVer, MCMajorVer);
NLRETERR(EFTYPE);
}
if (header.numSets <= 0) {
free(cat);
(void)fprintf(stderr, "%s: %s has %ld sets!\n",
_errowner, catpath, header.numSets);
NLRETERR(EFTYPE);
}
/* read in the set header */
set = cat->sets + i;
if (fread(set, sizeof(*set), 1, cat->fp) != 1) {
__nls_free_resources(cat, i);
CORRUPT();
}
cat->numSets = header.numSets;
if ((cat->sets = (MCSetT *)malloc(sizeof(MCSetT) * header.numSets)) ==
NULL)
NOSPACE();
/* if it's invalid, skip over it (and backup 'i') */
if (set->invalid) {
--i;
nextSet = set->nextSet;
continue;
}
nextSet = header.firstSet;
for (i = 0; i < cat->numSets; ++i) {
if (fseeko(cat->fp, nextSet, SEEK_SET) == -1) {
__nls_free_resources(cat, i);
CORRUPT();
}
/* read in the set header */
set = cat->sets + i;
if (fread(set, sizeof(*set), 1, cat->fp) != 1) {
__nls_free_resources(cat, i);
CORRUPT();
}
/* if it's invalid, skip over it (and backup 'i') */
if (set->invalid) {
--i;
nextSet = set->nextSet;
continue;
}
#if 0
if (cat->loadType == MCLoadAll) {
int res;
if ((res = loadSet(cat, set)) <= 0) {
__nls_free_resources(cat, i);
if (res < 0)
NOSPACE();
CORRUPT();
}
} else
#endif
set->invalid = TRUE;
nextSet = set->nextSet;
}
#if 0
if (cat->loadType == MCLoadAll) {
int res;
if ((res = loadSet(cat, set)) <= 0) {
__nls_free_resources(cat, i);
if (res < 0) NOSPACE();
CORRUPT();
}
} else
(void)fclose(cat->fp);
cat->fp = NULL;
}
#endif
set->invalid = TRUE;
nextSet = set->nextSet;
}
#if 0
if (cat->loadType == MCLoadAll) {
(void) fclose(cat->fp);
cat->fp = NULL;
}
#endif
return((nl_catd) cat);
return ((nl_catd) cat);
}
static int
loadSet(cat, set)
MCCatT *cat;
MCSetT *set;
MCCatT *cat;
MCSetT *set;
{
MCMsgT *msg;
int i;
MCMsgT *msg;
int i;
int saverr;
/* Get the data */
if (fseeko(cat->fp, set->data.off, SEEK_SET) == -1) return(0);
if ((set->data.str = malloc(set->dataLen)) == NULL) return(-1);
if (fread(set->data.str, set->dataLen, 1, cat->fp) != 1) {
free(set->data.str); return(0);
}
/* Get the messages */
if (fseeko(cat->fp, set->u.firstMsg, SEEK_SET) == -1) {
free(set->data.str); return(0);
}
if ((set->u.msgs = (MCMsgT *) malloc(sizeof(MCMsgT) * set->numMsgs)) == NULL) {
free(set->data.str); return(-1);
}
for (i = 0; i < set->numMsgs; ++i) {
msg = set->u.msgs + i;
if (fread(msg, sizeof(*msg), 1, cat->fp) != 1) {
free(set->u.msgs); free(set->data.str); return(0);
/* Get the data */
if (fseeko(cat->fp, set->data.off, SEEK_SET) == -1)
return (0);
if ((set->data.str = malloc(set->dataLen)) == NULL)
return (-1);
if (fread(set->data.str, set->dataLen, 1, cat->fp) != 1) {
saverr = errno;
free(set->data.str);
errno = saverr;
return (0);
}
if (msg->invalid) {
--i;
continue;
/* Get the messages */
if (fseeko(cat->fp, set->u.firstMsg, SEEK_SET) == -1) {
saverr = errno;
free(set->data.str);
errno = saverr;
return (0);
}
msg->msg.str = (char *) (set->data.str + msg->msg.off);
}
set->invalid = FALSE;
return(1);
if ((set->u.msgs = (MCMsgT *)malloc(sizeof(MCMsgT) * set->numMsgs)) ==
NULL) {
saverr = errno;
free(set->data.str);
errno = saverr;
return (-1);
}
for (i = 0; i < set->numMsgs; ++i) {
msg = set->u.msgs + i;
if (fread(msg, sizeof(*msg), 1, cat->fp) != 1) {
saverr = errno;
free(set->u.msgs);
free(set->data.str);
errno = saverr;
return (0);
}
if (msg->invalid) {
--i;
continue;
}
msg->msg.str = (char *)(set->data.str + msg->msg.off);
}
set->invalid = FALSE;
return (1);
}